Syringe



April 24, 19,28.

H. BRIX SYRINGE Filed March 28. 1925 Patented Apr. 24,v v19728.

`AEamonn Baix, or cH1caGoi,"rLL'INo`Is,"ssrGNoR-ro"sHARrsMITH,clasificado,

r applicati@ meu narch 28,1 1925.1' swarm 19,036. i

` 'lhis invention relates to. improvements in:

syringes and isfhereshown,embodied in a.

syringe especially adaptedffor,medical usegv for example, -i'or administeringa llocal yantestheftlc. 1 i

l Oneot' thefeatures of the/invention the"y provision of simpleffand o easily operable means for fastening a rdetachable nozzle Lor needle to the syringe.'y My improved syringe may be cheaply made, is easy to operate, and

' is strongand durable. f

I or needle in place.

, Other features of my invention will appear morefullyas I proceed with my specification.-` M

In that forml of device vembodying they features of my. invention shown' inthe' accom-` panying` drawings, Figure 114 is a View" of the complete syringe; in l'ro'nt elevation,` Fig. 2 is a fragmentary `view of thelower end of the Same looking from one side, Fig.' '3 is a View taken as indicated bythe line Bof Fig. 2, and Fig. 4 is a view of the stamping from whichthe finger is made that comprises a part of the means for holding the nozzle As `shown in the drawings, indicates a cylinder of a syringe which may be made in the ordinary form as well known in the art. The upper end or' the cylinder is .provided with the usual rings orhandles 11; and within the cylinderoperates a piston of the usual form attached' to one end of the piston rod 12 which is provided with thev usual ring or handle 13 on the other end. The cylinder, piston, pistonrod and handles thus described form no part of the present invention. Y

The lower end of the cylinder is provided with a tapered extension 14. 15 indicates a detachable needle or nozzle, the lower end 16 being pointed in the usual manner for insertion into the tissues.l The upper end of' the needle 15 is provided with an enlarged socket 17 having a tapered bore adaptedrto accommodate the tapered extension 14 wlnenA the needle is in place. The interior ofr the socket 17 and the tapered extension 14have corresponding tapers so'that upon slightly pressing Athe socket over the tapered eXten- Sion `a nice lit will be obtained. 17 is provided with two flattened wings 18 to assist'in putting the socket in place over the tapered extensionand to provide means for rotating the socket' slightly aswill be explained more in detail hereinafter.

Vthe rlrole22. [and i the i ngerfis The socket LIQ-Fil blank 19` ,proff erably` iformedyout ,e of stiffened sheet, xnai Y fterial; ThisblankflQ 'comprises' .ai stripv y2O enlarged, 4and rounded at one-'end as indi#` catedA by. 21'; said enlarged end -21being provided ,with' a .round hole 22.2 From thisv stamping or blank 19 `is formed comprising a part of the' means for ho ding the `needle in place. In ormingthe linf ger ithe strip, portion 20,.: is vgiven two substautially riglitangle .bends as vindicated at 20? and 20'in Fig. 2, theextremeendfof `the finger. then lyingibelow the rounded end 21 thefin er and pointing inwardlytoward the taperedl extension 14 ,as .indicated iby; 20S The' tapered. extension "1,4 is then insertedthrough place as indicated .by23- that other,` mea-nsl maybe :provided yfor holding the ,finger onthetaperedextension 14.

Theupper end-ofthe socket `17 is provided i with ai substantially i under surface of which is` slanted ory beveled as indicated by 25. y

In the operation of the Adevice, theneef dle is put in place by slippingthe socket 17 over the tapered extension 14.V Vhenthis is done, vthe socket 17 is turned so vthat the lug 24-will clear the end 20C `of the fin-` ger 20. The socket 17 is then lrotated (in 'a clockwise direction as viewed in Fig. 3)

p soldered in" i It isV obvious semigcircular"lugi'24, the i' soy tor swing the lug 24 over the end 20d of the i' holding finger 20. The beveled under surface 25f of thelug 24 rides up on the end 20c `of' the finger thus drawing the socket 17 Hrmly up in place on the tapered extension' 14 thus vholding the needle firmly `and securely` in place. rTo remove the needle the socket 17 is rotated in the opposite rdirection until i L the lug 24fclears` the end 20c of the finger 20 whereupon the socket may be slippedfofi' of the. tapered ext-ension14.' r

IlVhile I have shown and described certain "embodimentsrof my invention, it isk to be 7 s understood that l1t is capable of many modifications. .Clianges, therefore, in the con.-yk struction and arrangement "may be made without departing from the spirit and scope of the invention asdisclosedgin the appended claims, in which it is myintention to claim` all novelty `inherent in myy invention as 'broadlyas possible in view of the prior art.

What Iclaimas new,^and desire to secure bp Letters Patent, is:

\ LA syringe provided with a cylinder; a

tapered extension on the cylinder; a detachable needle having a socket with a tapered bore adapted to fit over the tapered extension; andy means for holding said socket inl place on said'extens'ion, said means' comprising a holding finger Jformed from a flat strip of sheet material having a'hole in one end, thetapered extension'on the syringe extendingr through said hole and thev finger being attached thereto, and a part on the socket adapted to engage said fingerby rotation of said'socketfnon-said tapered extensionto tighten said'socket on said extension.

QZ. A syringe provided with a cylinder; a tapered extension on the cylinder;V a detachable needle having al socket with a tapered bore adapted to fit over the tapered extension; and means for holding saidl socket lin place on said extension, said means comprising a linger formed ifi-oma strip of sheet material, said strip being provided with a holeat one end, with the tapered extension of the syringe extending therethrough and attached to said inger,` the other end of said strip. of material `being `bent downwardly and inwardly toward said tapered extension,

Y and a part on said socket adapted'to engage the` inwardly extending end of saidy lfinger by rotation of said socket to tighten said socket on said extension.

^ 3. A syringe provided with a cylinder; a tapered extension on the cylinder; a detachL able vneedle having a socket with a tapered with a: hole at one end, with the tapered ext Atension ot the 4syringe extending therethrough and attached to said finger, .the other vend of saidstrip of material being bent downwardly and inwardly toward sald tapered extension, and a beveled part on the socket'ladapted to'engage the .inwardly extending end of said linger.

LA syringe providedwith a cylinder; a tapered extension on the cylinder; adetachable needle having a socket with a tapered boreadapted to tit. over the tapered extension; and means for holding said socket in place on said extensiomsaid means comprising a finger formed trom a strip of sheet material, said strip being provided with a hole at one end, with the tapered Aextension ot the syringe extending therethrough and attached to said finger, the other end ofrsaid strip of material being bent downwardly and inwardly toward said tapered extension, and a beveled part on the socketadapted to engage the inwardlyextending end of said linger upon rotation of said socket. f e

Vitness my hand this 26th day of lvlarch,y A. 13.1925. i v f HAROLD Baix; y 

